Research Article | Volume: 5, Issue: 11, November, 2015

Chemical Constituents of Hoya buotii Kloppenb.

Virgilio D. Ebajo Jr. Robert Brkljača Sylvia Urban Consolacion Y. Ragasa   

Open Access   

Published:  Nov 27, 2015

DOI: 10.7324/JAPS.2015.501111

Chemical investigation of the dichloromethane extracts of Hoya buotii Kloppenb. afforded taraxerone (1), taraxerol (2), a mixture of β-sitosterol (3a) and stigmasterol (3b) in about 2:1 ratio, and a mixture of α-amyrin cinnamate (4a) and β-amyrin cinnamate (4b) in about 1:2 ratio from the stems; 1, 2, and 3a from the roots; a mixture of 4a and 4b in about 3:2 ratio from the flowers; and 3a, squalene (5) and saturated hydrocarbons from the leaves. The structures of 1-5 were identified by comparison of their NMR data with those reported in the literature.

Keyword:     Hoya buotii Apocynaceae taraxerone taraxerol β-sitosterol stigmasterol α-amyrin cinnamate β-amyrin cinnamate squalene.


Hoya buotii, Apocynaceae, taraxerone, taraxerol, β-sitosterol, stigmasterol, α-amyrin cinnamate, β-amyrin cinnamate, squalene. Chemical Constituents of Hoya buotii Kloppenb. J App Pharm Sci, 2015; 5 (11): 069-072.

Copyright:The Author(s). This is an open access article distributed under the Creative Commons Attribution Non-Commercial License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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